Currently the mob Heratius Grolden (triggered from killing any of the 4 named Vampires in Tenebrous at like a 5-10% chance) he is spawning 100% of the time, I do not think this is working as intended. I'm not sure if this is happening on other servers but it is on Coirnav currently.
I have no idea what you're referring to. If I cared about farming it I wouldn't have posted a thread directing them to fix it.
If you check zam you will see that the ashes dropped from this mob are not the ashes needed for the quest, those drop from Valdanov